Electron Gun Pins Assignment; Loa10-Aes - OCI BDL800IR Instruction Manual

GND
Fuse
AC In
Screen
LEED/AES Output
4.1.3

Electron Gun Pins Assignment

LEED Mode
A Filament
B Filament
C Wehnelt
D Common
F Focus
G Common
M Ground (Cable shielding)
J Grid 2&3

4.2 LOA10-AES

Model LOA10-AES is a dedicated controller allowing the INTEGRALEED optics perform-
ing Auger Electron Spectroscopy using Retarding Field Analyzer. This unit can also be used
in conjunction with other types of analyzers, such as Cylindrical Mass Analyzer. The unit
consists of a high voltage ramp, a precision sine wave generator, a lock-in amplifier, and a
low noise input coupler with a preamplifier.
All functions of this unit are controlled remotely by our AES software via the USB.
The high voltage ramp supplies a sine wave modulated output signal. The unit comprises
a precision sine wave oscillator with a maximum V
the range of ±5% by a trimmer located on the front panel.
using a PC.
Separate ground terminal.
2 A slow blow fuse rated for 100–120 V, or
1.5 A slow blow fuse rated for 220–240 V.
AC input power 3-pole socket.
BNC connector, maximum 5 kV DC.
12-pin connector for the electron gun cable.
Configuration of the pins partially differs be-
tween LEED and AES modes.
AES Mode
A Filament
B Filament
C Wehnelt
D Focus
F Common / Resistor Bias
G Common
M Ground (Cable shielding)
of 20 V. Its frequency can adjusted in
pp
Chapter 4 Electronics 17